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Project
Information > Major Features
Principal
Features | Construction Diagrams
The
Project is a two-lane facility, 12,182m in total length, starting from
Lang Co on the existing National Highway No. 1 (NH1) and ending at Lien
Chieu on the planned bypass (peripheral artery) in the Lien Chieu Industrial
Zone. It includes a 6,280m long tunnel section, bridge sections (eight
bridges) of 1,635m in total length, and highway sections of 4,273m in
total length. In parallel with the main tunnel, an evacuation tunnel
will be constructed to its east. The Project tunnel, to be operated
in bi-directional two lanes in the initial stage, will be in future
expanded to a four-lane tunnel by enlarging the parallel evacuation
tunnel.The ventilation system is a jet-fan longitudinal ventilation
system with an intermediate ventilation adit and three electrostatic
precipitators. At the south tunnel portal, a tunnel operation building
will be constructed together with a 110/22kV substation from which the
required power for tunnel operation will be supplied.The Project will
be operated as a toll road. Toll-gates are to be installed at both ends
of the tunnel.
Principal Features of the Hai Van Pass Tunnel
Construction Project
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1. Total Project Length
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12,182m (from Sta. -1+865 to Sta. 12+047)
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1)
Beginning Point:
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Lang Co (on the existing National Highway No.1)
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2)
Ending Point:
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Lien Chieu (on the planned Bypass in the Lien Chieu Industrial
Zone)
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2. Number of Traffic Lanes
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2 Lanes
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3. Tunnel Construction
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1)
Main Tunnel
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2 Lanes (3.75m wide lanes, 1.25m wide shoulders), 89.0m2,
6,280m long, Lay-by at 400m spacing
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2)
Evacuation Tunnel
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15.5m2, 6,286m long
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Vehicular and Pedestrian Cross Passages: |
4 Vehicular/Substation passages - 15.5m2 each
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11 Pedestrian passages-8.1m2 each
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4)
Ventilation System:
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Jet-fan Longitudinal Ventilation System with one intermediate
ventilation adits (Supply and exhaust, 36.2m2, 1,810m
long), and three Elestrostatic precipitators (57.7m2
and 153m long each)
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4. Bridge Construction
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1)
Number and Length:
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8 bridges, 1,653m in total length
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2)
Bridge Type:
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Precast, post-tensioned concrete I-girders with 33.35 and 25m
spans, cast-in-place concrete pile foundation for the Lang Co
Bridge and spread footing for the other 7 bridges.
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5. Highway Construction
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1)
Length:
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4,273m in total length
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2)
Width:
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7.50m carriageway, 1.75m shoulders
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6. Others
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1)
Toll Plazas
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Two plazas on both ends. Toll Plaza Buildings (main 370m2,
sub 90m2)
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2)
Tunnel Operation Building
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1,030m2 at South Portal area
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3)
Project 110/22KV Substation
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At South Portal area
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4-1)
Permanent Access
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From NH1 to the Adit Portal: 403m
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4-2)
Permanent Access
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From the South Portal to Water Reservoir: 817m
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Construction
Diagrams
Tunnel
Civil Works - North Tunnel Section and South Tunnel Section
Ventilation
Adit
Langco
Bridge Section
Southern
Highway Section
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